supporting science, technology, and improved economic performance and financial literacy in the 21st century. >> and with the ongoing support of these institutions and foundations. and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> brown: washington and the nation were witness again today to the quadrennial pomp and color of a presidential inauguration. it marked the public start to the second obama administration, and it featured presidential appeals to extend prosperity and full freedoms to all americans. as the sun rose over the nation's capital on this monday hundreds of thousands of people began descending on the national mall to witness the occasion. officials estimated 500-700,000 attendees. that was far fewer than four years ago when nearly two million turned out. but today's crowd gave no hint of diminished enthusiasm for the 44th president after a first term that saw bruising battles over health care, financial reform, deficits and spending and more. the man they